These 18 inch round Solid Color Sempertex Silk Midnight Grey latex balloons from Sempertex are perfect for making balloon arches, balloon columns, balloon clusters, and other balloon decorations. Color coordinate these latex balloons with themed foil mylar balloons for the ultimate balloon bouquet! Package includes – 18 inch Sempertex Silk Midnight Grey latex balloons. The balloons can be inflated with helium to float. Balloon arrives uninflated.